Automatic belease



H. A. LEWKSE AUTOMAUC RELEASE,

APPucAT-mu man MAR. 9! 19m.

1 1 95,824. Patented Aug. 22, 1916.

3 SHEETS-SHEET I.

.darnage as might result in UNITED STATES HARRY A. LEI-XV 1'3.

PATENT OFFICE.

01?. NORRXSTQ'WN, PENNSYLVANIA.

1,195,824, Sperilieatlon of Letters Extent Application fli d Mare h 51.

To all whom it may roam m Be it known that 'i, ll near rt. l V citizen of the lnited their, res no; in Norristown. lllontgomirv rountv. ilate oi Pennsylvania. have iivenied an Aul'omatio Release, of which the follow ng is a specifieation.

One objert of my lllHP'Etlflll Es to prov de an automati-ally artine inerlmniral deri e designed for interposition helvr en 2. driw ing and a driven member and s ronstruet ed that under predeterminml ronditi o su h as when the load on the driien men evceeds a predeterininewl amount. il, he automatically diseoni'iertml from he o ing member with a view to prev; uh

u vi'loadiilgf.

More 'iz'irtieularly it is desired to provide a devire available for use with lift eltip hoists 'and hoisting devices ol' all kinds driven by an elertrie or other motor and ineludinga member to he raised to a. errain height or brought to a deli-on position. which device shall autooiatirall -57 to disronneet the motor from the member driven thereby when the latter is hr 1 1 tidelinite point or in one form ot the mwrfion. when the speed of said driven mrihh jr exceeds that of the driving" member.

These objects and other dxautageous ends 1 secure as; hereinafter set tortl r ref-- erenre being had to the aer-oznpan vin hawings. in whirlr Figure l wrt Figs. 2. 3. and l are respertireix sid and a tront elevation ill "ug my invention as employed to operate a furnaee door: Fig. 5 is an elevation of the drum forming part of the invention: Fig. o is an elevation of form ot' the invention pan tieularly adapted to (-onnert a starting; motor with the shaft of an internal Poor stion.

engine; and Fig. 7 is an elevation p: "J in section showing the de ire arranged to operate a pair of valves.

In Fig. l of the above dram H sents a shaft having fixed to it other member whereby it may be dr.

'1 repre- 21 or irn in either direction from a sui'l'z'zhle source. of powera Fixed to this shaft. in the present instance by means'oli lg I are pair o1 shoulders in the torn: i dis-Ls having on th ir adjaeent-iaees plate.) suitable friction material such for we as is employed on braking serial:

Patented Aug. 22. i916.

1916. Sr'rialli'e. 83.132.

tween these two ll(llll(ltl'f I loosely mount upon the haft two substantially vlindriral and H having inclined eoai'tingi t'aeest lying in a plane at an aeute angle to a radial plane of the shaft l;-the arrangement being snrh that a rotary movement of one of said members relatively to the other will ueressarily rause them to move apart and jam agz'ainsl or grip the t'rietion mate rial on th disks ll and -l. The member 7 earries or has formed integral with it a drum or grooved wheel 9 and the member likewise, has a serond drum or grooxed wheel l2?v ;\loreo\er said two members are pi ovidvd with pri'ljeotions in the form of lugs if and 1'. both capable of engaging a lixed ahotmerl rirurture lil so as to prewnl; rev olution l' their respertive members; although it is to he noted that under rertain rondilions these lugs may be omitted will out departing from my invention.

To the drum 10 is attached one end of a rahlill whose seeond end is eonnerted to a bod l to he moved while a serond eahle 'l is ronni- -ted to the drum 9 so as to he wound thereon in a direetion opposite the. rahle ll on said first drum. the second end oi the rahle 16 being: ronneeted to another body l7 to he operated or moved.

"With the arrangement uhown it is assumed that when viewed from the right hand end oi the appamive, the cable 14 shall be wound that the body 15 will he members 7 ram. 2: whwise rotation of the memher vi sorh rotation of the member 7 'lil permit the cable 16 to unwind and lower the body li. llioreo'rer, these two bodies, acting: thron -h their (tables, relatively turn the membersv T and 8 through a small angle. causing their inclined eoacting film t move, them laterally and normally grip term to the trirtion disk so that if the shaft 1 he turned in a clockwise. direction they are turned with the disks 3 and 4 am. the shaft 1. thus raising the body 15 and lowering the body 3!. ll nen the body 15 has been raised to the iiztilzii height, the parts are so proportioned that the lug ll comes into contact with the abutment 13. thus stopping rotation. ot the member 7. Obviously a very sl ght continued forward clockwise movement of the member, 8 serves to release it from a, condition in which it is jammed between its disk 5 and the member 7 to its position in which it does not grip a with sufficient force to be rotated.

1min a.

niatimil \liseonnrrtv-tl :55 inf-in]? tin" ltitil'fl l the niein wrn; T" and W relatively to tin otinr to the an no longer ninufl holding engagement Mil Stitl it is parlir nlaI-tv to i e i owl the door Eltti eight 41% n how or tltYlt'tS are a tiln ui tlr vilifi means an: (wrtzzinly tiif-t)lllltt'tt"li lwwirom ninlt-r gnml -tw'ininml (t l'nlltltfih nil-ch that the mot r n t ilyfi'l'lt i i ftl nor any parts tlaxnagnwi. n llvtitl tii to n it, tin ilW j anti (& !ll!lti-\":l at in oinol the raw ill n ti'atetl, are hell! in their given voai ot' vvhethez o: not the ehatt are lnonnteiL i.-- tm'nwi. i the inn" il .th li t-lltililtl he oniittn'l. the men are none the in aittoinaiz-aii 1 from the shalt 1 when the loa-l o Hittit more mid liz liil =f'tms-no -31: to the it" '2 ztppiitil to anti it; plat-ml to from a wanton (it) to a:

ones-ages l? and 15. A a 1 H take the plat-e oi the tlePUF-J if? and ill" eight :27 reein-ctively. and as lwl'oin liltrtf ntillvtturns to la niovmi froth the motor \ih h driver; th nhaii l. we i'ozinwtwl i shalt. through timer; 1 whivh are n'oinnl the fable llttlitl leznling' iron; the

i any it) n" of revolution t Jami ltlltitiltltlvtr; when Jitilhi tively to the other: a (invite i i to in? (lifl V611 Connected. to said nnrinlsrni; anal mea s for prevent. g revolution of nn: oi the na hers after it has been turned the shaft to a pnnleternnneil extent.

The .natzion of a driving shaft; iwtnhntments there n; two members ioose on the shaft between the alnitmeiite ann lniv ine; faces inclined at an angle to their axis of revolution for canning them to grip he abut-merits when either nieinher lnr' relativniv to the other; a -(leviee to he actuated eon mutt-(i to one, if said nion'ihers; and. 5o naming ie nieniilei to be onto inane-ally release-"d rom the driving antion of the shaft after said member has linen driven thereby to a predetermined extent.

:3. The combination of a driving shaft lowing abutmenis; a member loose on he n he," 'l'rom the driving n tion of the shaft alter szlhl ltntlklH-l has been tuna-ll thereby l. The ltHHllllHlllUIl of a driving shaft; two allotments thereon; two members ioose on the shaft between the Hlflttllltllth an l having enacting tare llltlllittt at an angle to their axis oi rotation for (mining them to grip the almtments hen either member turns relatively to the other: a tleviee to he tli'iven ogim-atiwly eonner-ti-tl to one of the Zllt}l.lnl" mnl means for matonmtirally Yel inn sniil latter memhol' from the shaft nninireli-tern'iinetl conditioner r i The t-onihination ot :i driving: mha'tt; two HlHttRWIIt thereon: too lltillilklf loose n illt' shaft between tin" ahianienie and hm nn wanting t'avw in 'lint==l at an angle t their axis-i to" rotation to! on them to grip lllt nhntinents when either nn-niher torn jtlj-l tivtl l to the other; a ile'vier to he iiri' en operativel connected to one of the members: a relatively ilXitl atria-titre; anal means plaretl to enact with said fixed. struc- Lne, after said latter member has been turned l v the shaft to a preileterniineil ex' tent. for i'elear it from said shatt.

(L'ihe eonihination of a, driving shaft; iwo it i ttllitnls thereon; two tli'lllllS mounted )etneen the allotment; and having cometn15 l i laces innlii'ieil at, an acute angle to a rano of th shaft for causing them to the ahntmente when either drum is rrlaiiiveiy to the other: tables for i \ti'onia, :ll'lltjttlltf to be moved res n-eiiwiy eonnevtetl to said Gables; and means for itnton'mtiirnilv releasing Silitl iirnins from the shaft after they have made a prmleten minetl number of revolutiorns.

7. The combination of a driving" shaft; two alnitnientn thereon; two drains mounted between the abntments and having :oact ing faces inclined at an acute angle to a radial plane of the shaft for causing them to grip the abutments when either drum is turned relatively to the other; cables for ilii drums; structures to he moved respectivoiy connected to said cahlen; and means for automatically releasing sniii drums from the shaft after they have made a predetermined number of revolutions in either di reotion.

8. The combination of driving shaft; two abutnients thereon; two members loose on the shaft between the abutments and having faces inclined to their axis of revolution for causing them to grip the abntnients when either member turns ielatively in he 0mm: PM) (luvives h) 1w nvfinnlz-il nnmtimli u :lfim" Us 

